Automatic weighing scale



n. n. sTAuoErEn. AUTOMATIC WEIGHING SCALE. APPLICATIQN -HLED AUG-30. K920.

Patentd Aug. 15, 1922.

2 SHEETS-SHEET l.

ATTORNEY H. R. STANDEFER. AUTOMATIC WEIGHING SCALE. APPLlCATlON FILED Aus.30, 1920.

Patented Aug. 15, 1922.

2 SHEETSSHEET 2.

HENRY R. STANDEFER, OFMELVIN, TEXAS.

' Aurolvm'rro WEIGHING SCALE.

Application filed August 30,1920.

To all whom a: may Be it known that concern: I, HENRY R. STANDEFER,

v CltlZBIlOf the United States, residing at Mel vers, a means for vin inthe county of McCulloch and State of Texas, have invented certain new and useful Improvements in Automatic WVeighing Scales, of which the following is a specification.

My invention has relation to improvements in automatic weighing scales and has particular relation to improvements in that type of weighing scales set forth and claimed in my Letters Patent #1946585 and dated December 10, 1912. c

In the scales described and claimed in said Letters Patent, a receiver is suspended from one end of a scale beam which beam consti tutes the sole support of the receiver. The receiver when filled with a prescribed quantity of material tilts the scale beam and the upward movement of the weighted end of said beam operates through a series of leopening the discharge end of the receiver and a means oil the flow of material'to the two means being timed so that the flow of material to'the receiver ceases at or before the discharge from said receiver. 2 My pres:- ent invention contemplates amongst other things the improvement of the scales of my patent in certain important particulars, namely,the supporting of the receiver and the arrangement and construction of the meansfor shutting off the flow to the receiver and the means for opening the discharge from said receiver. l I

hus in my present invention the receiver is supported in a frame supporting the receiver in an upright position and preventing the wobbling of receiver the the receiver during the-up and down move mentof'said receiver and said eratively connected with the Again the frame is op.- scale beam. means for shutting off. the flow of material to the receiver aswell as the means for permitting of the discharge of material from sa1d receiver are slmpllfied in construction and arrangement.

The nature and scope of my-invention will be more fully. understood from the following description taken'inconnection with the accompanying drawings forming part hereof, in wh1ch-- Figure 1 is a matic weighing scales embodying the main features of my invention.

Specification of Letters Patent.

weighing bin or receiver 2. r T

rectangular frame, the.

perspective view of an auto- Patented Aug. 15, 1922. Serial No. 4o7,0e7.=

Figure 2 is a perspective view of the mech anlsm for openingand closing the discharge gates or doors of the receiver.

Figure 3 is a longitudinal illustrating the clutch.

Figure 4 is a of Figure 3.

Figure 5 is a perspectiveview of the mechsectional view anlsm for opening and closing the delivery chute feeding the receiver and i lgure 6 is a detail view of one. of the knife edge supports for supports the'receiver.

eferring to the drawings, 1. represents a discharge chute for the conveyance of grain cotton seed or similar material to a 7 he passage of material through chute 1 is controlled by a gate inthe form of a hinged door 3 and such material is supplied from a binor receptacle not show. is in the form of a box open at its upper side and normally closed at its base by two wings or hinged doors 4* opening outwardly.

the frame which view taken on the line 4+4 The bin orreceiver 2 i The receiver 21's supported within a frame consisting of two leverarms 5. and6arranged at either side of the receiver, each upper arm being provided at its rear end (to the right in Figurel) witha knife edge bearing 7 fitting. in complementally recessed lugor block 8' formed at the rear cor ners ofca main frame 9. Each lowerrear eornerof the receiver is connected with an upper lever arm 5 through strap 10 extending downwards from said arm.

Each lower lever arm 6 forward bearingll similar to the bearing 7 but resting in a recessed block 12formed at the front upper corners v The lower lever arms .6. are connected to the forward corners of receiver 3 by straps 13.

The two levers 5 and 6 are connected intermediate of their link 14. p I M Thetwoupper arms 5 gether at their forward ends by a rod 15 and at the rear ends by a'similar rodnot shown, the receiver 2 within the two arms 5 ends by a strap or thus being enclosedand the connecting 8 rods. For the purpose ofstrengthening and ispivotedat its I end sald pivot being a knife'edge of the main frame 9. v

are connected toarms 18 are secured, the weights on said arms tending normally to hold the doors t closed. The receiver 2 with its supporting arms 5 and 6 are held in raised position by the scale beam 20 having a sliding weight or pea 21 and pivoted. or fulcrumed intermediate of its ends in the support 22. To so hold the receiver 2 in its upr' 1t position the unweighted end of the beam 20 is preferably connected by links or strips 23 with the rod 15. The weight 2]. may be slid back and forth on the beam 20 to measure the weight of material. accumulating in receiver necessary to tilt said beam and thus force the receiver downward. This movement downward of the receiver sets in motion the mechanism for closing the gate or hinged door 3 in chute l and the mechanism for opening the counterweighted doors or wings l at the base of the receiver.

Referring now to Figure 5, the gate 3 has a crank arm 30 connected with one end of a link 31, the other end of said link 33. being connected with a crank lever The lever 32 has an end or arm 33 projecting inwards against the periphery of a gear wheel 34. A spring 35 normally tends to draw the link 81 downwardly to shut the gate, but a stop pin 36 on the wheel 3% normally impinges upon the arm 33 to hold said crank lever 32 and link 31 upwirds against the tension of spring to open the gate. When gear wheel starts to revolve the end of crank lever slips past the stop pin 36 and the spring 85 draws down the link 31 to shut the gate The gear wheel 34- is keyed to a stub shaft 40 which is arranged l to be locked. to or released from a constantly rotating driving wheel 4C1 through the medium of a key or bolt 42 working in a slot of shaft a0 and held towards locking position by a spring 4E3. The driving wheel. ll carries a number of locking plates ist revolving about the reduced end d5 of shaft 40 and said plates a l are secured o the hub of wheel. 4L1 in radial relationship with their lower ends projecting towards but separated some distance from the shaft end 4.5. Vi hen bolt a2 is projected under tension of its spring 3 it will enter between one of the plates 4:4: and reduced end 45 to lock the shaft 4:0 to the Wheel 4C1. A cam plate as carried by the bolt 42 and encircling the shaft a0 see Figure 2) cooperates with a stationary bar 4:7 to draw the bolt 42 backwards against its spring and a wedge d8 suspended by a cord 49 from the weighted end of scale beam 20 serves when lowered to lock the bolt in retracted position. The scale beam 20 when tilted upwards by the fall of the receiver 2 lifts the wedge e8 from the bolt and said bolt shoots into locking engagement with the hub of the driving wheel l1 thus setting in motion the gear wheel at to shut the gate 3.

The gear wheel 34. is in mesh. with a pinion 50 on a shaft 51 which carries a heat shaped cam 52 operating on a disk or circular plate 53 carried by an arm 54: projecting from. the pintle or red 17 of a door a. The shaft 51 as it revolves turns the cam 52, to sucessively, through disk lower and raise the arm 5 L to thereby open and through weighted balancing arms 18 close the door 4:. .The shaft 51 has a gear 55 in mesh with a similar gear 56 carrying a duplicate cam 57 operating a disk 58 controlling through arm 59 the movement of the other door l. The cams 52 and 57 being reversely arranged the two doors l are operated to open or close as required, when the gear 8% is locked to the driving wheel 4:1.

The receiver 2 discharges when doors 4 are opened into a chamber 60 tapering towards its base. In chamber (30 revolves an agitator shaft 61. The chamber 60 in turn empties into bags or a conveyor not shown. Having thus described the nature and ob jects of my invention, what I claim as new and desire to secure by Letters Patent is 1. In an automatic weighing scales, a receiver, a chute leading downwardly into the receiver, a gate in said chute for control and admission of material into the re ceiver, discharge doors arranged at the bottom of the receiver, arms connected with the lower corners of the receiver to sup port the same, knife edge bearings for each of said arms, a scale beam, a means for suspending the receiver through said arms from one end of said scale beam, and means controlled. by the movement of the other end of said beam whereby. when said receiver lowers under its measured load said chute gate is closed. and the discharge doors of the receiver are opened.

2. In an automatic weighing scales, a receiver, discharge doors swinging outward from the bottom of said receiver, a pintle for each door, a counteiweighted arm connected to each pintleto close its said door, an arm and disk connected to each pintle and a periodically operated heart shaped cam cooperating with each disk to lower and raise the disk arm and thereby open and close said door.

In testimony whereof I have signed my I 

